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Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2018
Equity [Abstract] |
Changes in Each Component of Accumulated Other Comprehensive Income (Loss), Net of Tax | The following table presents the changes in each component of accumulated other comprehensive income (loss), net of tax.
|  | For the Three-Month Period Ended |  |  | For the Three-Month Period Ended |
|  | March 31, 2018(a) |  |  | March 31, 2017(a) |
|  | Unrealized Gains and Losses on Available-for- Sale Securities |  |  | Defined Benefit Pension Items |  |  | Total |  |  | Unrealized Gains and Losses on Available-for- Sale Securities |  |  | Defined Benefit Pension Items |  |  | Total |
Beginning balance |  | $ | 3,185 |  |  | $ | (4,309 | ) |  | $ | (1,124 | ) |  | $ | 2,008 |  |  | $ | (4,345 | ) |  | $ | (2,337 | )
Other comprehensive income before reclassifications |  |  | (2,539 | ) |  |  | — |  |  |  | (2,539 | ) |  |  | 299 |  |  |  | — |  |  |  | 299 |
Amounts reclassified from accumulated other comprehensive loss |  |  | — |  |  |  | 113 |  |  |  | 113 |  |  |  | — |  |  |  | 62 |  |  |  | 62 |
Net current-period other comprehensive income |  |  | (2,539 | ) |  |  | 113 |  |  |  | (2,426 | ) |  |  | 299 |  |  |  | 62 |  |  |  | 361 |
Reclassification of equity securities from accumulated other comprehensive loss |  |  | (278 | ) |  |  | — |  |  |  | (278 | ) |  |  | — |  |  |  | — |  |  |  | — |
Ending balance |  | $ | 368 |  |  | $ | (4,196 | ) |  | $ | (3,828 | ) |  | $ | 2,307 |  |  | $ | (4,283 | ) |  | $ | (1,976 | )
(a) | Amounts in parentheses indicate debits on the consolidated balance sheets.
Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Income (Loss) | The following table presents the amounts reclassified out of each component of accumulated other comprehensive income (loss).
|  | Amount Reclassified from Accumulated Other Comprehensive Income (Loss) (a) |  |  |
Details about Accumulated Other Comprehensive (Loss) Components |  | For the three months ended March 31, 2018 |  |  | For the three months ended March 31, 2017 |  |  | Affected Line Item in the Statement Where Net Income is Presented
Amortization of defined benefit pension items |  |  |  |  |  |  |  |  |  |
Actuarial gains/(losses) (b) |  |  | (143 | ) |  |  | (94 | ) |  | Other operating expenses
Tax effect |  |  | 30 |  |  |  | 32 |  |  | Income tax expense
|  |  | (113 | ) |  |  | (62 | ) |  | Net of tax
Total reclassifications for the period |  | $ | (113 | ) |  | $ | (62 | ) |  | Net of tax
(a) | Amounts in parentheses indicate expenses/losses and other amounts indicate income/benefit.
(b) | These accumulated other comprehensive income components are included in the computation of net periodic pension cost.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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- Definition Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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